package com.eddie.community.controller;

import com.eddie.community.entity.User;
import com.eddie.community.service.impl.UserServiceImpl;
import com.eddie.community.util.CommunityConstant;
import com.eddie.community.util.CommunityUtil;
import com.eddie.community.util.RedisKeyUtil;
import com.google.code.kaptcha.Producer;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.CookieValue;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import javax.imageio.ImageIO;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Map;
import java.util.concurrent.TimeUnit;


/**
 * ClassName: LoginController
 * Package: com.eddie.community.controller
 * Description:注册功能
 * Date: 2021/1/9 0009 15:04
 * Author: eddie_zhan@yeah.net
 */
@Controller
public class LoginController implements CommunityConstant {


    private static final Logger logger = LoggerFactory.getLogger(LoginController.class);

    @Autowired
    private UserServiceImpl userServiceImpl;

    @Autowired
    private Producer kaptchaProducer;

    @Value("${server.servlet.context-path}")
    private String contextPath;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 获取注册页面
     *
     * @return
     */
    @RequestMapping(path = "/register", method = RequestMethod.GET)
    public String getRegisterPage() {
        return "/site/register";
    }

    /**
     * 获取忘记密码页面
     *
     * @return
     */
    @RequestMapping(path = "/forget", method = RequestMethod.GET)
    public String getForgetPage() {
        return "/site/forget";
    }

    /**
     * 获取登录页面
     *
     * @return
     */
    @RequestMapping(path = "/login", method = RequestMethod.GET)
    public String getLoginPage() {
        return "/site/login";
    }

    @RequestMapping(path = "/register", method = RequestMethod.POST)
    public String getRegisterPage(Model model, User user) {
        Map<String, Object> result = userServiceImpl.register(user);
        if (result == null || result.isEmpty()) {
            model.addAttribute("msg", "注册成功！激活邮件已发送到您的邮箱 " + user.getEmail() + " ，请及时激活");
            model.addAttribute("target", "/index");
            return "/site/operate-result";
        } else {
            model.addAttribute("usernameMsg", result.get("usernameMsg"));
            model.addAttribute("passwordMsg", result.get("passwordMsg"));
            model.addAttribute("emailMsg", result.get("emailMsg"));
            return "/site/register";
        }
    }

    @RequestMapping(path = "/activation/{userId}/{code}", method = RequestMethod.GET)
    public String activation(Model model, @PathVariable("userId") int userId, @PathVariable("code") String code) {
        int result = userServiceImpl.activation(userId, code);
        if (result == ACTIVATION_FAILED) {
            model.addAttribute("msg", "激活码有误，账号激活失败！");
            model.addAttribute("target", "/index");
        } else if (result == REPEATED_ACTIVATION) {
            model.addAttribute("msg", "账号已激活，请勿重复操作！");
            model.addAttribute("target", "/index");
        } else {
            model.addAttribute("msg", "激活成功！您的账号可以正常使用了~");
            model.addAttribute("target", "/login");
        }
        return "/site/operate-result";
    }

    /**
     * 登录
     *
     * @param username
     * @param password
     * @param code
     * @param rememberme
     * @param model
     * @param request
     * @param response
     * @param session
     * @return
     */
    @RequestMapping(path = "/login", method = RequestMethod.POST)
    public String login(String username, String password, String code, boolean rememberme,
                        Model model, HttpServletRequest request, HttpServletResponse response,
                        @CookieValue("kaptchaOwner") String kaptchaOwner /*HttpSession session*/) {
        //验证码校验
        //String kaptcha = (String) session.getAttribute("kaptcha");
        String kaptcha = null;
        if (StringUtils.isNotBlank(kaptchaOwner)) {
            String redisKey = RedisKeyUtil.getKaptchaKey(kaptchaOwner);
            kaptcha = (String) redisTemplate.opsForValue().get(redisKey);
        }
        if (StringUtils.isBlank(kaptcha) || StringUtils.isBlank(code) || !kaptcha.equalsIgnoreCase(code)) {
            model.addAttribute("codeMsg", "验证码错误！");
            return "/site/login";
        }
        //账密校验
        int expired = rememberme ? REMEMBERME_EXPIRED : DEFAULT_EXPIRED;
        Map<String, Object> map = userServiceImpl.login(username, password, expired);

        //根據map结果判断跳转路径
        if (map.containsKey("ticket")) {
            Cookie cookie = new Cookie("ticket", map.get("ticket").toString());
            cookie.setPath(request.getContextPath());
            cookie.setMaxAge(expired);
            response.addCookie(cookie);
            return "redirect:/index";
        } else {
            model.addAttribute("usernameMsg", map.get("usernameMsg"));
            model.addAttribute("passwordMsg", map.get("passwordMsg"));
            return "/site/login";
        }

    }

    /**
     * 生成验证码
     *
     * @param response
     * @param session
     */
    @RequestMapping(path = "/kaptcha", method = RequestMethod.GET)
    public void kaptcha(HttpServletResponse response, HttpSession session) {
        //生成验证码
        String text = kaptchaProducer.createText();
        BufferedImage image = kaptchaProducer.createImage(text);
        //传入session
        //session.setAttribute("kaptcha", text);

        // 验证码的归属
        String kaptchaOwner = CommunityUtil.generateUUID();
        Cookie cookie = new Cookie("kaptchaOwner", kaptchaOwner);
        cookie.setMaxAge(60);
        cookie.setPath(contextPath);
        response.addCookie(cookie);

        // 将验证码存入Redis
        String redisKey = RedisKeyUtil.getKaptchaKey(kaptchaOwner);
        redisTemplate.opsForValue().set(redisKey, text, 60, TimeUnit.SECONDS);

        //输出图片
        response.setContentType("image/png");
        try {
            OutputStream os = response.getOutputStream();
            ImageIO.write(image, "png", os);
        } catch (IOException e) {
            logger.error("响应验证码失败：" + e.getMessage());
        }
    }

    @RequestMapping(path = "/logout", method = RequestMethod.GET)
    public String logout(@CookieValue("ticket") String ticket) {
        userServiceImpl.logout(ticket);
        //清除授权
        SecurityContextHolder.clearContext();
        return "redirect:index";
    }
}
